/**
 * Copyright (c) 2010, Casey Lai
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 * 
 * Neither the name of the Cheetah Group nor the names of its contributors may be
 * used to endorse or promote products derived from this software without specific
 * prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

package org.cheetahworkflow.designer.part;

import org.cheetahworkflow.designer.figure.EndEllipseFigure;
import org.cheetahworkflow.designer.figure.ModuleRectangleFigure;
import org.cheetahworkflow.designer.figure.SequenceRectangleFigure;
import org.cheetahworkflow.designer.figure.StartEllipseFigure;
import org.cheetahworkflow.designer.figure.SwitchDiamondFigure;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.FigureCanvas;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.tools.CellEditorLocator;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.swt.widgets.Text;


public class NodeEditLocator implements CellEditorLocator {
	
	private Figure figure;
	
	NodeEditLocator(Figure figure) {
		this.figure = figure;
	}

	@Override
	public void relocate(CellEditor editor) {
		if (figure instanceof StartEllipseFigure || figure instanceof EndEllipseFigure) {
			return;
		}
		
		Text text = (Text) editor.getControl();
        Rectangle rect = null;
		if (figure instanceof SequenceRectangleFigure) {
			SequenceRectangleFigure nodeFigure = (SequenceRectangleFigure) figure;
			rect = nodeFigure.getTextBounds();
		} else if (figure instanceof ModuleRectangleFigure) {
			ModuleRectangleFigure nodeFigure = (ModuleRectangleFigure) figure;
			rect = nodeFigure.getTextBounds();
		} else if (figure instanceof SwitchDiamondFigure) {
			SwitchDiamondFigure nodeFigure = (SwitchDiamondFigure) figure;
			rect = nodeFigure.getTextBounds();
		} else if (figure instanceof Label) {
			Label label = (Label) figure;
			rect = label.getTextBounds();
		}
		FigureCanvas canvas = (FigureCanvas) text.getParent();
		int scrollWidth = canvas.getViewport().getHorizontalRangeModel().getValue();
		int scrollHeight = canvas.getViewport().getVerticalRangeModel().getValue();

		int width = rect.width + 10;
		Point location = rect.getLocation();
		text.setBounds(location.x - 5 - scrollWidth, location.y - scrollHeight, width, rect.height);
	}

}
